A compound, C8H10O2, has an 1H NMR spectrum showing peaks at delta 2.6 (1 H, singlet), 3.8 (3 H, singlet), 4.5 (2 H, singlet), 6.8 (2 H, doublet), and 7.2 (2 H, doublet). Draw its structure in the window below. a. You do not have to consider stereochemistry. b. You do not have to explicitly draw H atoms. c. Do not include lone pairs in your answer. They will not be considered in the grading. d. In cases where there is more than one answer, just draw one.

1.aluminum chloride (alcl3), and sodium hydroxide (naoh) can react to form aluminum hydroxide (al(oh)3) and sodium chloride (nacl).    you have 13.4 g of aluminum chloride and 10.0 g of sodium hydroxide. answer the following questions: •what is the balanced equation for this reaction? •if you use all 13.4 g of aluminum chloride, how many grams of aluminum hydroxide can be formed? work must be shown to earn credit •if you use all 10.0 g of sodium hydroxide, how many grams of aluminum hydroxide can be formed? work must be shown to earn credit •how many grams of aluminum hydroxide will actually be made?     which reagent is limiting? explain your answer.

The agent of mechanical weathering in which rock is worn away by the grinding action of other rock particles is call

Express the following number in scientific notation. 0.026890 =